阅读说明：本技术 可伸缩外置天线 (Telescopic external antenna ) 是由 满方明 于 2021-08-25 设计创作，主要内容包括：本申请提供了一种可伸缩外置天线,所述天线包含：一内部中空的可伸缩套筒；所述套筒内设置有至少一条辐射体；所述至少一条辐射体的一端焊接于一片带IC芯片的PCB上；所述带IC芯片与一SMA连接器连接,所述SMA连接器固定设置在所述套筒的端部。(The application provides a scalable external antenna, the antenna contains: a telescopic sleeve with a hollow inner part; at least one radiating body is arranged in the sleeve; one end of the at least one radiator is welded on a PCB with an IC chip; the IC chip is connected with an SMA connector, and the SMA connector is fixedly arranged at the end part of the sleeve.)

1. A retractable external antenna, comprising:

a telescopic sleeve with a hollow inner part;

at least one radiating body is arranged in the sleeve;

one end of the at least one radiator is welded on a PCB with an IC chip;

the IC chip is connected with an SMA connector, and the SMA connector is fixedly arranged at the end part of the sleeve.

2. The antenna of claim 1, wherein the at least one radiator is printed on a flexible circuit board.

3. An antenna according to claim 2, wherein the sleeve comprises an outer fixed component and a movable component disposed within the fixed component, a gap being provided between the fixed and movable components.

4. An antenna according to claim 3, characterized in that the flexible circuit board provided with the radiator comprises two sections, a first section of the flexible circuit board being arranged in the fixed component and a second section of the flexible circuit board being arranged in the movable component and being able to be pulled out or pushed back.

5. The antenna of claim 4, wherein a fixing mechanism is provided between the fixed member and the movable member for holding and fixing at a position pulled out to the antenna long-size shape.

6. The antenna of claim 5, wherein the components of the fixed mechanism are disposed within the fixed component and the movable component;

the fixing mechanism comprises a polygonal plastic pipe column in the fixing assembly, plastic elastic legs are arranged on the polygonal plastic pipe column and used for limiting the fixing assembly and the movable assembly when the fixing assembly and the movable assembly are pulled open to the maximum extent, and the fixing assembly and the movable assembly are prevented from being separated.

7. An antenna according to claim 1, wherein the SMA connector is sealingly disposed with the sleeve.

8. The antenna of claim 1, wherein a rubber sleeve is disposed outside the antenna, the rubber sleeve has a length that can be extended and recovered along with the pulling out and pressing back of the antenna movable assembly, and an open end of the rubber sleeve is clamped between the antenna and the equipment interface to provide sealing and waterproof functions for the antenna and the equipment.

Technical Field

The invention relates to the field of antennas, in particular to a telescopic external antenna.

Background

The external antenna of the outdoor mobile communication equipment requires certain waterproof and anti-falling performance, the overall dimension is mainly determined by the working frequency band, and some external antennas have the telescopic function, so that the antenna can be stretched to a long-size shape to receive and transmit radio signals with better performance, and can also be compressed to a short-size shape from the long-size shape to be standby for receiving the radio signals.

The existing telescopic external antenna comprises a fixed component and a movable component, wherein a metal radiating body of the antenna for receiving and transmitting radio signals is a spiral coil and a straight metal wire, the spiral coil is arranged in the fixed component, and the straight metal wire is arranged in the movable component; the radiator of another kind of telescopic external antenna is composed of multiple metal tubes, the long size of the radiator is formed by connecting multiple metal tubes with different diameters end to end, and the short size of the radiator is formed by retracting multiple metal tubes in one metal tube.

However, the antenna in the prior art has an unreasonable structure and is easy to damage a radiator after being stretched for multiple times.

Disclosure of Invention

In order to overcome the not enough that prior art exists, this application has proposed a scalable external antenna, the antenna contains:

a telescopic sleeve with a hollow inner part;

at least one radiating body is arranged in the sleeve;

one end of the at least one radiator is welded on a PCB with an IC chip;

the IC chip is connected with an SMA connector, and the SMA connector is fixedly arranged at the end part of the sleeve.

In one possible implementation, the at least one radiator is printed on a flexible circuit board.

In one possible implementation, the sleeve includes an outer fixed component and a movable component disposed within the fixed component, with a gap disposed therebetween.

In a possible implementation manner, the flexible circuit board provided with the radiator includes two sections, a first section of the flexible circuit board is arranged in the fixed component, and a second section of the flexible circuit board is arranged in the movable component and can be pulled out or pressed back.

In one possible implementation manner, a fixing mechanism is arranged between the fixed component and the movable component and used for keeping the fixed position when the antenna is pulled out to the long-dimension shape of the antenna.

In one possible implementation, the components of the fixed mechanism are disposed within the fixed component and the movable component;

the fixing mechanism comprises a polygonal plastic pipe column in the fixing assembly, plastic elastic legs are arranged on the polygonal plastic pipe column and used for limiting the fixing assembly and the movable assembly when the fixing assembly and the movable assembly are pulled open to the maximum extent, and the fixing assembly and the movable assembly are prevented from being separated.

In one possible implementation, the SMA connector is sealingly disposed with the sleeve.

In one possible implementation mode, a rubber sleeve is arranged outside the antenna, the length of the rubber sleeve can be extended and recovered along with the pulling-out and pressing-back of the antenna movable assembly, and the open end of the rubber sleeve is clamped between the antenna and the equipment interface to provide sealing and waterproof functions for the antenna and the equipment.

Due to the application of the technical scheme, compared with the prior art, the invention has the following beneficial effects: this application sets up the irradiator on two sections flexible circuit boards, separately sets up two flexible circuit boards, neither can take place to damage because of frequently buckling, has also saved the inside space of antenna.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Drawings

Fig. 1 is a schematic structural diagram of a flexible circuit board in an exemplary embodiment of the invention;

figure 2 is a cross-sectional view of an antenna portion structure in an exemplary embodiment of the invention;

figure 3 is a cross-sectional view of an antenna portion structure in an exemplary embodiment of the invention;

figure 4 is a cross-sectional view of an antenna portion structure in an exemplary embodiment of the invention;

figure 5 is a cross-sectional view of an antenna portion structure in an exemplary embodiment of the invention;

figure 6 is a cross-sectional view of an antenna portion structure in an exemplary embodiment of the invention.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.

Referring to fig. 1, the present invention provides a retractable external antenna. The antenna radiator is a plurality of spiral metal circuits, and the metal circuits are arranged on a flexible printed circuit board FPC. For example, the antenna is rolled into a cylindrical shape (FPC cylinder for short) having an outer diameter of about 11 mm and a length of about 85 mm.

As shown in fig. 2, one end of the FPC cylinder is soldered to a PCB with an IC chip, and an SMA connector is soldered to one side of the PCB; the SMA connector is sleeved outside an antenna shell end, the antenna shell end is sleeved outside an antenna shell, and the SMA connector and the antenna shell are bonded by glue and enclose a closed space to provide sealing and water proofing for the FPC cylinder; the antenna is connected with the mobile communication equipment through an SMA connector; an elastic rubber ring is arranged at the interface of the antenna and the shell to provide sealing and water resistance, and meanwhile, the antenna has certain falling resistance.

As shown in fig. 3 and 4, the retractable external antenna is composed of a fixed component, a movable component and a fixed mechanism, wherein the SMA connector is connected with the mobile communication device, and a silicone sleeve outside the antenna can provide sealing and waterproof functions. More specifically, the original FPC cylinder comprises two sections, wherein one section is arranged in an antenna fixing component, the other section is arranged in an antenna movable component, the antenna movable component is hidden in the fixing component and can be manually pulled out or pressed back, the long-size shape of the antenna is pulled out to be clamped by a fixing mechanism, meanwhile, the two sections of FPC cylinders are electrically connected to receive and transmit radio signals with better performance, the two sections of FPC cylinders are manually pressed into the short-size shape of the antenna and then clamped by the fixing mechanism, the two sections of FPC cylinders are separated from the electrical connection, and the antenna can receive the radio signals in a standby mode; the antenna is externally provided with a silica gel sleeve, the length of the silica gel sleeve can be extended and recovered along with the pulling-out and pressing-back of the antenna movable assembly, and the opening end of the silica gel sleeve is clamped between the antenna and the equipment interface and can provide sealing and waterproof functions for the antenna and the equipment.

More specifically, as shown in fig. 5, one end of each metal circuit on the FPC cylinder of the fixing assembly is welded with a metal elastic sheet, the other end of each metal circuit is welded on a PCB with an IC chip, one end of the PCB is welded with an SMA connector, the SMA connector is sleeved outside an antenna housing, a space surrounded by the FPC cylinder, the PCB, the SMA connector and the antenna housing is filled with low-pressure injection molding hot melt adhesive, the metal elastic sheets keep elasticity after low-pressure injection molding, and the FPC cylinder and the metal circuits are indirectly fixed on the inner wall of the antenna housing and do not deform along with the deformation of the metal elastic sheets.

The securing mechanism has two functions: firstly, the movable component is limited to move only in the axial direction, and secondly, the movable component is automatically clamped when moving to the position of the long size or the short size of the antenna.

The components of the fixing mechanism are respectively arranged in the fixed component and the movable component. The component in the fixed component is a polygonal plastic pipe column which is connected in the fixed component by low-pressure injection molding hot melt adhesive. Continuing to refer to fig. 5, the components in the movable assembly share the plastic sleeve assembly, which not only achieves the function of limiting the movable assembly to move along the axial direction by means of the matching of the polygonal inner wall of the plastic sleeve assembly and the polygonal plastic pipe column, but also achieves the function of automatically clamping the movable assembly by means of the matching of the concave ring grooves formed by the inner walls of the plastic sleeve assembly and two sets of plastic spring legs on the plastic pipe column, the specific principle is that the inner wall of the plastic sleeve assembly is provided with two concave ring grooves, the positions of the concave ring grooves correspond to the long and short sizes of the antenna, the plastic pipe column is provided with two sets of plastic spring legs, when the plastic sleeve assembly moves along the axial direction of the plastic pipe column, the plastic spring legs can be compressed in the plastic pipe column without limiting the axial movement of the plastic sleeve assembly, however, when the plastic spring legs move to the long size or short size of the antenna, the plastic spring legs can automatically pop out when meeting one concave ring groove, if the plastic sleeve continues to move forward, the end face of the plastic elastic leg meets the wall surface of the concave ring groove to generate a large counter force to prevent the plastic sleeve component from moving forward, and manual reverse force is applied to the plastic sleeve component, so that the edge of the concave ring groove can press the inclined surface of the plastic elastic leg to force the plastic elastic leg to retract into the plastic pipe column with small force, and the plastic sleeve component can be separated from the concave ring groove with small axial force.

As shown in fig. 6, the movable assembly is composed of an FPC sleeve and a plastic sleeve assembly, the plastic sleeve assembly is composed of a plastic sleeve, plastic sleeve caps at two ends, and plastic sleeve ends, and the outer diameter of the FPC cylinder is slightly smaller than the inner diameter of the FPC cylinder of the fixed assembly and is attached to the surface of the plastic sleeve assembly.

The FPC cylinder of the movable assembly moves along with the plastic sleeve assembly in the axial direction, the metal circuit contacts the metal elastic sheet in the FPC cylinder of the fixed assembly at the long-size shape of the antenna, and the metal elastic sheet is separated from contact when the FPC cylinder leaves the long-size position.

The inventive concept is explained in detail herein using specific examples, which are given only to aid in understanding the core concepts of the invention. It should be understood that any obvious modifications, equivalents and other improvements made by those skilled in the art without departing from the spirit of the present invention are included in the scope of the present invention.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

It should be understood that reference to "a plurality" herein means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.